ReadonlyfinishedBuilds finished (built, failed or cancelled while running) since the pool was made.
ReadonlyidleWorkers ended (or, inline, tinybvh instances dropped) because they sat idle for idleTimeoutMs.
ReadonlyqueuedBuilds waiting for a worker.
ReadonlyrecycledWorkers ended because a build left their WASM memory past recycleAboveBytes.
ReadonlyrunningBuilds running now.
ReadonlyworkersWorkers started and alive.
Counts for tools and tests.